Building material.



R. E. BOORAEM.

BUILDING MATERIAL.

APPLICATION FILED JAN. 12. 1912.

Patented Dec. 7, 1915.

amen WM COLUMBIA PLANOGRAPH co wAsmNfl'rorl, D. c.

IINITED TATE PATENT @FFIQE.

ROBERT E. BOORAEM, OF FORT COLLINS, COLORADO, ASSIGNOR 0F ONE-FOURTH TOWILLIAM H. BARKER, OF NEW YORK, N. Y.

BUILDING MATERIAL.

Application filed January 12, 1912.

To all whom it may concern:

Be it known that I, ROBERT E. BOORAEM, a citizen of the United States,residing in the city of Fort Collins, and the county of Larimer andState of Colorado, have invented new and useful Improvements in BuildingMaterial; and I do declare the following to be a full, clear, and exactdescription of my invention such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the figures of reference markedthereon, which form a part of this specification.

My invention relates to improvements in building material of a naturewhich may be used for insulating purposes in the construction ofbuildings and other structures.

()ne of the principal objects of my invention resides in theconstruction of roofs which will be impervious to heat or cold.

Another object of my invention resides in the provision of materialespecially adaptable for roofing and similar purposes.

In the drawing: Figure 1 is a cross section of a roof illustrating theapplication of my improved building material. Fig. 2 is a plan view of asingle unit of my building material. Fig. 3 is a section taken on theline 33 Fig. 2, looking in the direction of the arrow.

formed in a solid part of material of a thickness equal to thedifference between the walls of the vacuum chamber and the oppositesides of the groove has walls of increased thickness as compared withthe walls of the Specification of Letters Patent.

Patented Dec. "7, 1915.

Serial No. 670,882.

vacuum chamber. The opposite sides 19 and 20 of the groove 16 are thusof solid material and are respectively provided with registeringopenings 20 and 22, which openings register with the opening 18 in thetongue 17 of the adjacent shingle when the said shingle is in positionon the roof. The fastening devices are then inserted through theopenings when in the aforesaid registering position and enter the roofor wood work upon which the shingles are laid.

Attention is here called to the fact that the apex of the roof disclosedin Fig. 1 may be capped off with a V-shaped vacuum strip 29 whichstraddles the apex of the roof and extends throughout the length of thelatter.

While I have described and illustrated herein a. specific form of myinvention, it is understood that the same may be varied and modifiedwithout departing from the spirit of my invention and the domain of theappended claim.

Having thus described my invention what I claim is:

A hollow building tile having a solid extension at one extremity of lessthickness than the body portion and constituting a tongue, this beingperforated, and the tile having at its opposite end an extension ofapproximately the thickness of the hollow tile and grooved, whereby itis adapted to receive the tongue of an adjacent member, the oppositewalls of the said grooved extension being provided with perforationsthat register with the perforations of the tongue of an adjacent memberwhen two tiles are properly placed together, whereby fastening devicesmay be passed through the registering perforations securing the tilesinposition on the structure to which they are applied.

In testimony whereof I afiix my signature in the presence of twowitnesses.

ROBERT E. BOORAEM.

Witnesses:

J NO. G. POWELL, FRANK W. SWIFT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

